Call of the End of the World

Li Qingcang found that summons can evolve under specific conditions. In the era of the end of the world, in the era of the strong, how to stand at the peak of strength, power and homeland without hard work! Summoning skeletons: Level 1 (skull, a shabby big knife, thin bone rack 1.7 meters) Level 2 (thick skeleton, sharp knife, large and strong skeleton, 1.8 meters)